CN114551498A - Display screen correction method and device, electronic equipment and storage medium - Google Patents

Display screen correction method and device, electronic equipment and storage medium Download PDF

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Publication number
CN114551498A
CN114551498A CN202011303715.6A CN202011303715A CN114551498A CN 114551498 A CN114551498 A CN 114551498A CN 202011303715 A CN202011303715 A CN 202011303715A CN 114551498 A CN114551498 A CN 114551498A
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China
Prior art keywords
display screen
signal
pixel
sub
reflection
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CN202011303715.6A
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Chinese (zh)
Inventor
郑智仁
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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Priority to CN202011303715.6A priority Critical patent/CN114551498A/en
Publication of CN114551498A publication Critical patent/CN114551498A/en
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness

Abstract

The present disclosure relates to a method, an apparatus, an electronic device and a storage medium for correcting a display screen, wherein the method is applied to a terminal device having a display screen and a fingerprint identifier disposed in the display screen, and comprises: controlling the display screen to send a first optical signal; acquiring a reflection signal acquired by the fingerprint identifier, wherein the reflection signal is an optical signal obtained by reflecting the first optical signal by a jig, and the jig is arranged outside the display screen in advance; and adjusting the intensity of the first optical signal according to the reflected signal and the reference signal so as to enable the intensities of the reflected signal and the reference signal to be the same. The fingerprint recognizer is used for collecting the reflected signals, so that a light intensity adjusting scheme with a negative feedback mechanism can be formed, namely, the light intensity of the display screen can be adjusted in a closed loop until the intensity requirement of the reference signal is met, the accuracy of light intensity adjustment of the display screen is improved, and the problem of inaccurate adjustment caused by an open-circuit adjusting mode is solved.

Description

Display screen correction method and device, electronic equipment and storage medium
Technical Field
The disclosure relates to the technical field of terminal equipment, in particular to a method and a device for correcting a display screen, electronic equipment and a storage medium.
Background
With the progress of science and technology, the functions of the terminal equipment are more abundant and the performance is more excellent. Especially, the display screen of the terminal device has undergone several revolutionary advances and developments in recent years, and the display performance is more and more superior. In the process of delivery and use of a display screen of a terminal device, the display screen needs to be optically corrected, and correction in the related technology is not accurate, so that the display screen cannot keep normal display brightness.
Disclosure of Invention
In order to overcome the problems in the related art, embodiments of the present disclosure provide a method and an apparatus for correcting a display screen, an electronic device, and a storage medium, so as to solve the defects in the related art.
According to a first aspect of the embodiments of the present disclosure, there is provided a method for correcting a display screen, which is applied to a terminal device having a display screen and a fingerprint identifier disposed in the display screen, the method including:
controlling the display screen to send a first optical signal;
acquiring a reflection signal acquired by the fingerprint identifier, wherein the reflection signal is an optical signal obtained by reflecting the first optical signal by a jig, and the jig is arranged outside the display screen in advance;
and adjusting the intensity of the first optical signal according to the reflected signal and the reference signal so as to enable the intensities of the reflected signal and the reference signal to be the same.
In one embodiment, the controlling the display screen to transmit the first light signal includes:
and controlling at least one pixel of the display screen to send a first sub-signal.
In one embodiment, the adjusting the intensity of the first optical signal according to the reflected signal and the reference signal so that the intensities of the reflected signal and the reference signal are the same includes:
determining a reflection sub-signal of each pixel in the at least one pixel according to the reflection signal, wherein the reflection sub-signal is an optical signal obtained by reflecting a first optical signal sent by the pixel by the jig;
and adjusting the intensity of the first optical signal of the corresponding pixel according to the reflection sub-signal and the reference signal, so that the intensity of the reflection sub-signal of the corresponding pixel is the same as that of the reference signal.
In one embodiment, the controlling at least one pixel of the display screen to transmit the first sub-signal includes:
and controlling one pixel of the display screen to send a first sub-signal.
In one embodiment, the controlling at least one pixel of the display screen to transmit the first sub-signal includes:
and controlling the same color pixel of the display screen to send a first sub-signal.
In one embodiment, the controlling at least one pixel of the display screen to transmit the first sub-signal includes:
controlling pixels in a first area of the display screen to send a first sub-signal, wherein the first area is a pixel set formed by a plurality of pixels.
In one embodiment, the correction method further comprises:
and the terminal prestores the reference signal and acquires the prestored reference signal when correcting.
In one embodiment, the display screen is an organic light emitting diode display screen.
In one embodiment, the fingerprint identifier is an optical fingerprint module.
In one embodiment, the fingerprint identifier is distributed on the inner side of the display screen.
According to a second aspect of the embodiments of the present disclosure, there is provided a correction apparatus for a display screen, applied to a terminal device having a display screen and a fingerprint identifier disposed in the display screen, the apparatus including:
the transmitting module is used for controlling the display screen to transmit a first optical signal;
the first acquisition module is used for acquiring a reflection signal acquired by the fingerprint identifier, wherein the reflection signal is an optical signal obtained by reflecting the first optical signal by a jig, and the jig is arranged outside the display screen in advance;
and the adjusting module is used for adjusting the intensity of the first optical signal according to the reflected signal and the reference signal so as to enable the intensities of the reflected signal and the reference signal to be the same.
In one embodiment, the sending module is specifically configured to:
and controlling at least one pixel of the display screen to send a first sub-signal.
In one embodiment, the adjusting module is specifically configured to:
determining a reflection sub-signal of each pixel in the at least one pixel according to the reflection signal, wherein the reflection sub-signal is an optical signal obtained by reflecting a first optical signal sent by the pixel by the jig;
and adjusting the intensity of the first optical signal of the corresponding pixel according to the reflection sub-signal and the reference signal, so that the intensity of the reflection sub-signal of the corresponding pixel is the same as that of the reference signal.
In an embodiment, when the sending module is configured to control at least one pixel of the display screen to send the first sub-signal, the sending module is specifically configured to:
and controlling one pixel of the display screen to send a first sub-signal.
In an embodiment, when the sending module is configured to control at least one pixel of the display screen to send the first sub-signal, the sending module is specifically configured to:
and controlling the same color pixel of the display screen to send a first sub-signal.
In an embodiment, when the sending module is configured to control at least one pixel of the display screen to send the first sub-signal, the sending module is specifically configured to:
controlling pixels in a first area of the display screen to send a first sub-signal, wherein the first area is a pixel set formed by a plurality of pixels.
In one embodiment, further comprising:
a storage module for storing the reference signal;
a second obtaining module, configured to obtain the reference signal pre-stored in the storage module.
In one embodiment, the display screen is an organic light emitting diode display screen.
In one embodiment, the fingerprint identifier is an optical fingerprint module.
In one embodiment, the fingerprint identifier is distributed on the inner side of the display screen.
According to a third aspect of the embodiments of the present disclosure, there is provided an electronic device, which includes a memory for storing computer instructions executable on a processor, and the processor is configured to perform the method for correcting a display screen according to any one of the first aspect when executing the computer instructions.
According to a fourth aspect of embodiments of the present disclosure, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method of any one of the first aspects.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
according to the correction method of the display screen, the display screen is controlled to send the first optical signal, the first optical signal is reflected by the jig arranged outside the display screen in advance to form a reflection signal, the fingerprint identifier arranged in the display screen collects the reflection signal, the reflection signal collected by the fingerprint identifier is further obtained, and the intensity of the first optical signal is adjusted according to the reflection signal and the reference signal until the intensity of the reflection signal is the same as that of the reference signal. The fingerprint recognizer is used for collecting the reflected signals, so that a light intensity adjusting scheme with a negative feedback mechanism can be formed, namely, the light intensity of the display screen can be adjusted in a closed loop until the intensity requirement of the reference signal is met, the accuracy of light intensity adjustment of the display screen is improved, and the problem of inaccurate adjustment caused by an open-circuit adjusting mode is solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a flow chart illustrating a method of correcting a display screen according to an exemplary embodiment of the present disclosure;
FIG. 2 is a diagram illustrating a scenario of optical fingerprinting in accordance with an exemplary embodiment of the present disclosure;
FIG. 3 is a partial circuit diagram of a fingerprint identification module according to an exemplary embodiment of the present disclosure;
FIG. 4 is a light path diagram of a fingerprint recognition module according to an exemplary embodiment of the present disclosure;
FIG. 5 is an optical path diagram illustrating a first optical signal and a reflected signal according to an exemplary embodiment of the present disclosure;
FIG. 6 is a schematic diagram illustrating one pixel lit up in accordance with an exemplary embodiment of the present disclosure;
FIG. 7 is a schematic diagram of a pixel of one color lit up as shown in an exemplary embodiment of the present disclosure;
FIG. 8 is a schematic diagram illustrating a pixel of one color of a first region being lit up in accordance with an exemplary embodiment of the present disclosure;
FIG. 9 is a full flow chart of a method for correcting a display screen shown in an exemplary embodiment of the present disclosure;
FIG. 10 is a full flow chart of a method for correcting a display screen shown in another exemplary embodiment of the present disclosure;
fig. 11 is a schematic structural diagram of a correction device of a display screen according to an exemplary embodiment of the present disclosure;
fig. 12 is a block diagram of an electronic device shown in an exemplary embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
With the progress of science and technology, the functions of the terminal equipment are more and more abundant, and the performance is more and more superior. Especially, the display screen of the terminal device has undergone several revolutionary advances and developments in recent years, and the display performance is more and more superior. In the process of delivery and use of a display screen of a terminal device, the display screen needs to be optically corrected, and correction in the related technology is not accurate, so that the display screen cannot keep normal display brightness. Specifically, in the related art, the display screen is corrected by using the formula of material attenuation and the timer, that is, an open circuit correction, which is not accurate, and is more likely to cause the problem of uneven color generation of the picture, thereby causing uncomfortable visual effect experience for the user.
Based on this, at least one embodiment of the present disclosure provides a correction method applied to a display screen of a terminal device, please refer to fig. 1, which shows a flow of the correction method, including steps S101 to S103.
The terminal device may be a smart phone, a tablet computer, a desktop/laptop/handheld computer, a notebook computer, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, a cellular phone, a Personal Digital Assistant (PDA), an Augmented Reality (AR)/Virtual Reality (VR) device, and the like, and includes a display screen or a device capable of performing interface display, and the terminal device has a fingerprint identifier under the display screen, that is, the terminal device has an under-screen fingerprint identification function, although the embodiment of the present disclosure does not intend to limit the specific form of the terminal device.
In step S101, the display screen is controlled to transmit a first optical signal.
The first optical signal sent by the display screen is sent to the outside of the display screen, and the first optical signal sent by the display screen can form the display content of the display screen. The light emitting area and the light emitting intensity of the display panel can be controlled by a display Driver IC (Driver IC), for example, the display Driver IC can change the light intensity of the display panel by adjusting the driving voltage and/or the driving current.
In one example, the display screen is an Organic Light Emitting Diode (OLED) display screen.
In step S102, a reflection signal collected by the fingerprint identifier is obtained, where the reflection signal is an optical signal obtained by reflecting the first optical signal by a fixture, and the fixture is pre-disposed outside the display screen.
Before the display screen is corrected by using the method provided by the embodiment of the disclosure, the jig can be placed outside the display screen, so that the first optical signal can form a reflected signal; the jig can have a plane, and this plane can carry out seamless laminating with the front of display screen to can reduce the energy loss after first light signal is through the reflection. In a preferred example, the jig may be a plane mirror, and the front surface of the plane mirror is attached to the front surface of the display screen when the jig is placed.
The first optical signal is reflected by a jig arranged outside the display screen in advance to form a reflection signal, and the reflection signal is collected by a fingerprint identifier arranged in the display screen, so that the reflection signal collected by the fingerprint identifier is further obtained in the step, and the reflection signal is used as a representation signal of the first optical signal, namely, the parameter of the reflection signal is detected, so that the parameter can be regarded as the parameter of the first optical signal and used in the subsequent steps. During fingerprint identification, the fingerprint identifier may collect the light signal reflected by the finger, detect the light intensity of the light signal, and further determine the fingerprint image according to the light intensity of the light signal.
In one example, the fingerprint identifier is an optical fingerprint module. Referring to fig. 2, a scene of optical fingerprint recognition is exemplarily shown, wherein a display screen 201 includes a front surface and a back surface (the front surface faces to the outside of a terminal device such as a mobile phone, and the back surface faces to the inside of the terminal device such as a mobile phone), the front surface is used for being touched by a finger 202, a fingerprint recognizer 203 is arranged on the back surface, and self-luminescence in the display screen is reflected back to the fingerprint recognizer 203 after hitting the finger 202, so as to realize fingerprint recognition under the screen. Referring to fig. 3, a partial circuit of a Thin Film Transistor sensor (TFT sensor) fingerprint recognition module is exemplarily shown, in which a TFT switch and a Photodiode (PD) form a pixel circuit, and after light energy is collected and converted into electric charges, the light energy is selected by a gate line (Gateline) and flows out to a charge amplifier (charge amplifiers), and then is converted into digital signals by an analog-to-digital converter (ADC). Each TFT switch and one PD represents a pixel that is read in a row-wise read, e.g., from the top down sequentially, in a full read. Referring to fig. 4, an optical path diagram of a Thin Film Transistor sensor (TFT sensor) fingerprint identification module is exemplarily shown, where the TFT and the PD are the TFT and the PD in fig. 2, and a combination of the micro lens 401 and the small hole 4021 on the light shielding layer 402 allows the PD to receive only light entering at a small angle θ directly above the PD, so as to reduce light mixing caused by light entering at other large angles, which is helpful for fingerprint imaging.
Referring to fig. 5, an optical path diagram of a first optical signal and a reflected signal is exemplarily shown, in which a fixture 501 is attached to an outer surface of an OLED display 502, that is, to an outer surface of a cover plate 5021, the first optical signal emitted by a light emitting layer 5022 passes through the cover plate 5021 and reaches the fixture 501, and is reflected by the fixture 501 to form the reflected signal, and the reflected signal passes through the cover plate 5021 and the light emitting layer 5022 and reaches an optical fingerprint identification module, that is, passes through a micro lens 503 and a small hole 5041 of a light shielding layer 504 and reaches a photodiode PD.
In one example, the fingerprint identifiers may be distributed on the inner side of the display screen, so that the whole display screen can be corrected by applying the correction method of the embodiment; the fingerprint identifiers may also be distributed in a part of the area of the display screen, so that only the display screen in this area can be corrected by applying the correction method of this embodiment.
In step S103, the intensity of the first optical signal is adjusted according to the reflected signal and the reference signal, so that the intensities of the reflected signal and the reference signal are the same.
When the terminal equipment such as a mobile phone leaves a factory, the display screen needs to be corrected, and the display screen can be corrected after being photographed and analyzed by a CCD camera. The design file of the display screen comprises the light intensity requirement of the display screen, and the light intensity requirement is specific to the image obtained by photographing by the CCD camera, so that the light intensity requirement can be used as a reference, the image of the display screen, which is photographed by the CCD camera, emitting light is analyzed, the difference between the light intensity of each pixel of the display screen and the light intensity requirement is fed back, and the correction is carried out according to the difference until the light intensity of each pixel meets the light intensity requirement. The display screen corrected by the correction method for CCD camera photographing analysis meets the design requirements, so that a jig can be arranged outside the display screen, the display screen is controlled to send a first optical signal, the first optical signal is reflected by the jig to form a reflection signal, then the reflection signal collected by a fingerprint identifier in the display screen is obtained, the light intensity of the reflection signal is determined, the reflection signal can be used as a reference signal, namely the light intensity of the signal is used as the light intensity of the reference signal, and finally the reflection signal and the light intensity thereof are stored and used as the reference signal in the correction method. The terminal devices with the same design (such as the same type of mobile phone or the same batch of mobile phones) can select one part of the terminal devices to be corrected by adopting a CCD camera photographing analysis method to determine and store a reference signal, and the rest part of the terminal devices can be corrected by adopting the correction method of the application by utilizing the reference signal.
After the terminal equipment such as a mobile phone leaves a factory, the display screen needs to be corrected according to a certain period in the using process, otherwise, the display screen is prone to have the problems such as flasks, and the correction at the moment is performed by the correction method provided by the embodiment of the application. No matter the correction method of CCD camera photographing analysis is adopted, or the correction method provided by the application is adopted, after the terminal equipment before leaving factory is corrected, a jig is arranged outside the display screen, the display screen is controlled to send a first optical signal, the first optical signal is reflected by the jig to form a reflection signal, then the reflection signal collected by the fingerprint identifier in the display screen is obtained, the light intensity of the reflection signal is determined, the reflection signal can be used as a reference signal, namely the light intensity of the signal is used as the light intensity of the reference signal, and finally the reflection signal and the light intensity thereof are stored to be used as the reference signal in the correction method of the application. Therefore, when the display screen is corrected at this stage, the reference signal determined and saved in the factory correction process can be directly acquired and adopted.
In an example, the terminal device further includes a storage module for storing the reference signal, so that after factory calibration, the determined reference signal is stored in the storage module, and before adjusting the intensity of the first optical signal, it is necessary to first obtain the reference signal stored in the storage module in advance, and then adjust the intensity of the first optical signal according to the reflected signal and the reference signal.
In this step, the light intensities of the reference signal and the reflected signal may be compared, and when the light intensities are different, the light intensity of the first optical signal is changed by adjusting the driving voltage and/or the driving current using a display driving module (Driver IC) until the light intensities of the reflected signal and the reference signal are the same, that is, the light intensities of the first optical signal and the reference signal are the same. Each display screen has a GAMMA curve for representing the relationship between the driving voltage and the driving current and the light intensity, so in a preferred example, after the target light intensity to be adjusted is determined, the corresponding driving voltage and driving current can be obtained from the GAMMA curve, and then the driving voltage and driving current are correspondingly adjusted by the display driving module, so that the light intensity of the first optical signal can reach the target light intensity, that is, can be the same as the light intensity of the reference signal.
According to the correction method of the display screen, the display screen is controlled to send the first optical signal, the first optical signal is reflected by the jig arranged outside the display screen in advance to form a reflection signal, the fingerprint identifier arranged in the display screen collects the reflection signal, the reflection signal collected by the fingerprint identifier is further obtained, and the intensity of the first optical signal is adjusted according to the reflection signal and the reference signal until the intensity of the reflection signal is the same as that of the reference signal. The fingerprint recognizer is used for collecting the reflected signals, so that a light intensity adjusting scheme with a negative feedback mechanism can be formed, namely, the light intensity of the display screen can be adjusted in a closed loop until the intensity requirement of the reference signal is met, the accuracy of light intensity adjustment of the display screen is improved, and the problem of inaccurate adjustment caused by an open-circuit adjusting mode is solved.
In some embodiments of the present disclosure, the display screen may be controlled to transmit the first light signal in the following manner: and controlling at least one pixel of the display screen to send a first sub-signal. That is, some pixels of the display screen may be selectively made to emit light, that is, to transmit the first sub-signal, and all pixels of the display screen may be made to emit light, that is, to transmit the first sub-signal. The first sub-signals transmitted by the at least one pixel together constitute a first light signal.
Based on the manner of sending the first optical signal, the following may be performed to adjust the intensity of the first optical signal according to the reflected signal and the reference signal, so that the intensities of the reflected signal and the reference signal are the same, including: firstly, determining a reflection sub-signal of each pixel in the at least one pixel according to the reflection signal, wherein the reflection sub-signal is an optical signal which is sent by the pixel and is reflected by the jig; then, according to the reflection sub-signal and the reference signal, the intensity of the first optical signal of the corresponding pixel is adjusted so that the intensity of the reflection sub-signal of the corresponding pixel is the same as that of the reference signal.
The above method performs individual correction for each pixel, and can further improve the pertinence and accuracy of correction. And the PD of optics fingerprint module can be with the pixel one-to-one correspondence of OLED display screen, therefore every PD is responsible for receiving the reflected signal of corresponding pixel, the independent correction of every pixel of being convenient for.
In some embodiments of the present disclosure, the display screen may be controlled to transmit the first light signal in the following manner: and controlling one pixel of the display screen to send a first sub-signal. Referring to fig. 6, which exemplarily shows a state where one pixel is lit up (where optical paths of the first sub-signal and the reflection sub-signal are not shown), the remaining structures (the jig 601, the display screen 602, the cover plate 6021, the light-emitting layer 6022, the micro-lens 603, the shielding layer 604, and the small hole 6041) are the same as the corresponding structures shown in fig. 5. That is, the display screen lights up one pixel at a time, i.e., one pixel transmits the first sub-signal and then performs correction for the pixel. All pixels of the whole display screen are independently corrected in the mode, and therefore the correction pertinence and accuracy are further improved.
The pixel arrangement, pitch (pitch) and size of the OLED display screen do not completely correspond to the distribution of the PDs, so that in the practical application process, there is no precise correspondence in space, that is, the same PD may receive the reflection sub-signals of different pixels at the same time, which causes difficulty in resolution, and thus, the accuracy and pertinence of correction may be affected, and this problem can be avoided by the above-mentioned manner of individually lighting each pixel.
In some embodiments of the present disclosure, the display screen may be controlled to transmit the first light signal in the following manner: and controlling the same color pixel of the display screen to send a first sub-signal. Referring to fig. 7, it exemplarily shows a state that a pixel (red pixel) of one color is lit up (where optical paths of the first sub-signal and the reflected sub-signal are not shown), and the remaining structures (the jig 701, the display screen 702, the cover plate 7021, the light emitting layer 7022, the micro-lens 703, the shielding layer 704, and the small hole 7041) are the same as the corresponding structures shown in fig. 5.
The pixels in the display screen are divided into three types of red (R), green (G) and blue (B), the number of the pixels is average, the positions of the pixels exist in a unit form, and one unit comprises one pixel of each of the three types of the pixels (R), the green (G) and the blue (B). Therefore, when the same PD receives the reflected sub-signals of different pixels, it usually receives the reflected sub-signals of three pixels, namely (R), green (G) and blue (B), and the pixels with the same color are far away from each other and have little or no influence on each other. Therefore, in the above manner, after the pixels are classified according to the colors, the pixels of one color are lit up each time, that is, the pixels of one color transmit the first sub-signal, and then correction is performed for each pixel of the color. The pixels of the three colors are independently corrected in the mode, so that the correction pertinence and accuracy are guaranteed, the correction inaccuracy caused by different sensitivities of different PDs under different colored light (wavelength) is reduced, and meanwhile, the correction efficiency is improved.
In some embodiments of the present disclosure, the display screen may be controlled to transmit the first light signal in the following manner: controlling pixels in a first area of the display screen to send a first sub-signal, wherein the first area is a pixel set formed by a plurality of pixels. Referring to fig. 8, it exemplarily shows a state that a pixel of one color (a red pixel) in the first region is lit up (where optical paths of the first sub-signal and the reflection sub-signal are not shown), and the remaining structures (the jig 801, the display screen 802, the cover plate 8021, the light-emitting layer 8022, the micro-lens 803, the shielding layer 804, and the aperture 8041) are the same as the corresponding structures shown in fig. 5.
In the step of sequentially lighting the pixels of each color, the pixels of each color may be further partitioned, and in the step of correcting, the pixels of the first color in each region are sequentially lighted, that is, the pixels of the first color in each region transmit the first sub-signal, and then correction is performed on the lighted pixels; after the pixels in each area are separately corrected in the above manner, the pixels in each area are sequentially lightened for the second color, and the pixels in each area are sequentially lightened for the third color, and corresponding correction operation is performed. The lighting mode of combining the subareas and the subareas can further improve the correction accuracy.
Referring to fig. 9, a complete flow of the calibration method provided by the embodiment of the present application is exemplarily shown. Referring to fig. 10, another complete flow of the correction method provided by the embodiment of the present application is exemplarily shown, which is a way of sequentially lighting up each color pixel for correction.
According to a second aspect of the embodiments of the present disclosure, there is provided a correction apparatus for a display screen, applied to a terminal device having a display screen and a fingerprint identifier disposed in the display screen, the apparatus including:
a sending module 1101, configured to control the display screen to send a first optical signal;
a first obtaining module 1102, configured to obtain a reflection signal collected by the fingerprint identifier, where the reflection signal is an optical signal obtained by reflecting the first optical signal by a fixture, and the fixture is pre-disposed outside the display screen;
an adjusting module 1103, configured to adjust the intensity of the first optical signal according to the reflected signal and the reference signal, so that the intensities of the reflected signal and the reference signal are the same.
In some embodiments of the present disclosure, the sending module is specifically configured to:
and controlling at least one pixel of the display screen to send a first sub-signal.
In some embodiments of the present disclosure, the adjusting module is specifically configured to:
determining a reflection sub-signal of each pixel in the at least one pixel according to the reflection signal, wherein the reflection sub-signal is an optical signal obtained by reflecting a first optical signal sent by the pixel by the jig;
and adjusting the intensity of the first optical signal of the corresponding pixel according to the reflection sub-signal and the reference signal, so that the intensity of the reflection sub-signal of the corresponding pixel is the same as that of the reference signal.
In some embodiments of the present disclosure, when the sending module is configured to control at least one pixel of the display screen to send the first sub-signal, the sending module is specifically configured to:
and controlling one pixel of the display screen to send a first sub-signal.
In some embodiments of the present disclosure, when the sending module is configured to control at least one pixel of the display screen to send the first sub-signal, the sending module is specifically configured to:
and controlling the same color pixel of the display screen to send a first sub-signal.
In some embodiments of the present disclosure, when the sending module is configured to control at least one pixel of the display screen to send the first sub-signal, the sending module is specifically configured to:
controlling pixels in a first area of the display screen to send a first sub-signal, wherein the first area is a pixel set formed by a plurality of pixels.
In some embodiments of the present disclosure, further comprising:
a storage module for storing the reference signal;
a second obtaining module, configured to obtain the reference signal pre-stored in the storage module.
In some embodiments of the present disclosure, the display screen is an organic light emitting diode display screen.
In some embodiments of the present disclosure, the fingerprint identifier is an optical fingerprint module.
In some embodiments of the present disclosure, the fingerprint identifier is interspersed with the inner side of the display screen.
With regard to the apparatus in the above-mentioned embodiments, the specific manner in which each module performs the operation has been described in detail in the first aspect with respect to the embodiment of the method, and will not be elaborated here.
According to a third aspect of the embodiments of the present disclosure, please refer to fig. 12, which schematically illustrates a block diagram of an electronic device. For example, the apparatus 1200 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.
Referring to fig. 12, the apparatus 1200 may include one or more of the following components: processing component 1202, memory 1204, power component 1206, multimedia component 1208, audio component 1210, input/output (I/O) interface 1212, sensor component 1214, and communications component 1216.
The processing component 1202 generally controls overall operation of the apparatus 1200, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing element 1202 may include one or more processors 1220 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 1202 can include one or more modules that facilitate interaction between the processing component 1202 and other components. For example, the processing component 1202 can include a multimedia module to facilitate interaction between the multimedia component 1208 and the processing component 1202.
The memory 1204 is configured to store various types of data to support operation at the device 1200. Examples of such data include instructions for any application or method operating on the device 1200, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 1204 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
A power component 1206 provides power to the various components of the device 1200. Power components 1206 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for apparatus 1200.
The multimedia components 1208 include a screen that provides an output interface between the device 1200 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 1208 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the apparatus 1200 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
Audio component 1210 is configured to output and/or input audio signals. For example, audio component 1210 includes a Microphone (MIC) configured to receive external audio signals when apparatus 1200 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 1204 or transmitted via the communication component 1216. In some embodiments, audio assembly 1210 further includes a speaker for outputting audio signals.
The I/O interface 1212 provides an interface between the processing component 1202 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor assembly 1214 includes one or more sensors for providing various aspects of state assessment for the apparatus 1200. For example, the sensor assembly 1214 may detect an open/closed state of the apparatus 1200, the relative positioning of the components, such as a display and keypad of the apparatus 1200, the sensor assembly 1214 may also detect a change in the position of the apparatus 1200 or a component of the apparatus 1200, the presence or absence of user contact with the apparatus 1200, orientation or acceleration/deceleration of the apparatus 1200, and a change in the temperature of the apparatus 1200. The sensor assembly 1214 may also include a proximity sensor configured to detect the presence of a nearby object in the absence of any physical contact. The sensor assembly 1214 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1214 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communications component 1216 is configured to facilitate communications between the apparatus 1200 and other devices in a wired or wireless manner. The apparatus 1200 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, 12G or 6G or a combination thereof. In an exemplary embodiment, the communication component 1216 receives a broadcast signal or broadcast associated information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communications component 1216 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 1200 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the power supply method of the electronic devices.
In a fourth aspect, the present disclosure also provides, in an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 1204 comprising instructions, executable by the processor 1220 of the apparatus 1200, to perform the method of powering the electronic device. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (22)

1. A correction method of a display screen is characterized by being applied to a terminal device with the display screen and a fingerprint recognizer arranged in the display screen, and the method comprises the following steps:
controlling the display screen to send a first optical signal;
acquiring a reflection signal acquired by the fingerprint identifier, wherein the reflection signal is an optical signal obtained by reflecting the first optical signal by a jig, and the jig is arranged outside the display screen in advance;
and adjusting the intensity of the first optical signal according to the reflected signal and the reference signal so as to enable the intensities of the reflected signal and the reference signal to be the same.
2. The method for correcting the display screen according to claim 1, wherein the controlling the display screen to transmit the first light signal comprises:
and controlling at least one pixel of the display screen to send a first sub-signal.
3. The method for correcting the display screen according to claim 2, wherein the adjusting the intensity of the first light signal according to the reflected signal and the reference signal so that the intensities of the reflected signal and the reference signal are the same comprises:
determining a reflection sub-signal of each pixel in the at least one pixel according to the reflection signal, wherein the reflection sub-signal is an optical signal obtained by reflecting a first optical signal sent by the pixel by the jig;
and adjusting the intensity of the first optical signal of the corresponding pixel according to the reflection sub-signal and the reference signal, so that the intensity of the reflection sub-signal of the corresponding pixel is the same as that of the reference signal.
4. The method for correcting the display screen according to claim 2, wherein the controlling at least one pixel of the display screen to transmit a first sub-signal comprises:
and controlling one pixel of the display screen to send a first sub-signal.
5. The method for correcting the display screen according to claim 2, wherein the controlling at least one pixel of the display screen to transmit a first sub-signal comprises:
and controlling the same color pixel of the display screen to send a first sub-signal.
6. The method for correcting the display screen according to claim 2 or 5, wherein the controlling at least one pixel of the display screen to transmit a first sub-signal comprises:
and controlling pixels in a first area of the display screen to send a first sub-signal, wherein the first area is a pixel set formed by a plurality of pixels.
7. The correction method of the display screen according to claim 1, characterized in that the correction method further comprises:
and the terminal prestores the reference signal and acquires the prestored reference signal when correcting.
8. The method for correcting a display screen according to any one of claims 1 to 5, wherein the display screen is an organic light emitting diode display screen.
9. The method for correcting the display screen according to any one of claims 1 to 5, wherein the fingerprint recognizer is an optical fingerprint module.
10. The method for correcting the display screen according to any one of claims 1 to 5, wherein the fingerprint recognizer is distributed on the inner side of the display screen.
11. A correction device of a display screen is applied to a terminal device with the display screen and a fingerprint recognizer arranged in the display screen, and the correction device comprises:
the transmitting module is used for controlling the display screen to transmit a first optical signal;
the first acquisition module is used for acquiring a reflection signal acquired by the fingerprint identifier, wherein the reflection signal is an optical signal obtained by reflecting the first optical signal by a jig, and the jig is arranged outside the display screen in advance;
and the adjusting module is used for adjusting the intensity of the first optical signal according to the reflected signal and the reference signal so as to enable the intensities of the reflected signal and the reference signal to be the same.
12. The device for correcting the display screen according to claim 11, wherein the sending module is specifically configured to:
and controlling at least one pixel of the display screen to send a first sub-signal.
13. The device for correcting the display screen according to claim 12, wherein the adjusting module is specifically configured to:
determining a reflection sub-signal of each pixel in the at least one pixel according to the reflection signal, wherein the reflection sub-signal is an optical signal obtained by reflecting a first optical signal sent by the pixel by the jig;
and adjusting the intensity of the first optical signal of the corresponding pixel according to the reflection sub-signal and the reference signal, so that the intensity of the reflection sub-signal of the corresponding pixel is the same as that of the reference signal.
14. The device according to claim 12, wherein the sending module, when controlling at least one pixel of the display screen to send the first sub-signal, is specifically configured to:
and controlling one pixel of the display screen to send a first sub-signal.
15. The device according to claim 12, wherein the sending module, when controlling at least one pixel of the display screen to send the first sub-signal, is specifically configured to:
and controlling the same color pixel of the display screen to send a first sub-signal.
16. The device according to claim 12 or 15, wherein the sending module, when controlling at least one pixel of the display screen to send the first sub-signal, is specifically configured to:
controlling pixels in a first area of the display screen to send a first sub-signal, wherein the first area is a pixel set formed by a plurality of pixels.
17. The display screen correction apparatus of claim 1, further comprising:
a storage module for storing the reference signal;
a second obtaining module, configured to obtain the reference signal pre-stored in the storage module.
18. The device of any one of claims 11 to 15, wherein the display screen is an organic light emitting diode display screen.
19. A device for calibrating a display screen according to any one of claims 11 to 15, wherein the fingerprint sensor is an optical fingerprint module.
20. A correction device for a display screen according to any one of claims 11 to 15, wherein the fingerprint identifier is distributed over the inner side of the display screen.
21. An electronic device, characterized in that the electronic device comprises a memory for storing computer instructions executable on a processor, the processor being configured to base the correction method of the display screen according to any one of claims 1 to 10 when executing the computer instructions.
22. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the method of any one of claims 1 to 10.
CN202011303715.6A 2020-11-19 2020-11-19 Display screen correction method and device, electronic equipment and storage medium Pending CN114551498A (en)

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CN202011303715.6A CN114551498A (en) 2020-11-19 2020-11-19 Display screen correction method and device, electronic equipment and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011303715.6A CN114551498A (en) 2020-11-19 2020-11-19 Display screen correction method and device, electronic equipment and storage medium

Publications (1)

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Country Link
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